Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751326Ab3IJKCk (ORCPT ); Tue, 10 Sep 2013 06:02:40 -0400 Received: from out02.mta.xmission.com ([166.70.13.232]:58441 "EHLO out02.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751011Ab3IJKCj (ORCPT ); Tue, 10 Sep 2013 06:02:39 -0400 From: ebiederm@xmission.com (Eric W. Biederman) To: Christian Kujau Cc: LKML , Vasiliy Kulikov References: <87r4cybio2.fsf@xmission.com> Date: Tue, 10 Sep 2013 03:00:31 -0700 In-Reply-To: (Christian Kujau's message of "Tue, 10 Sep 2013 01:30:28 -0700 (PDT)") Message-ID: <87ioy90zeo.fsf@tw-ebiederman.twitter.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-XM-AID: U2FsdGVkX1+Gsqfj7tihcmKkY2aq/Z8WMZWx0u4nS0g= X-SA-Exim-Connect-IP: 98.207.154.105 X-SA-Exim-Mail-From: ebiederm@xmission.com X-Spam-Report: * -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP * 0.0 T_TM2_M_HEADER_IN_MSG BODY: T_TM2_M_HEADER_IN_MSG * -0.0 BAYES_20 BODY: Bayes spam probability is 5 to 20% * [score: 0.1861] * -0.0 DCC_CHECK_NEGATIVE Not listed in DCC * [sa06 1397; Body=1 Fuz1=1 Fuz2=1] * 1.2 XMSubMetaSxObfu_03 Obfuscated Sexy Noun-People * 1.0 XMSubMetaSx_00 1+ Sexy Words X-Spam-DCC: XMission; sa06 1397; Body=1 Fuz1=1 Fuz2=1 X-Spam-Combo: *;Christian Kujau X-Spam-Relay-Country: Subject: Re: proc hidepid=2 and SGID programs X-Spam-Flag: No X-SA-Exim-Version: 4.2.1 (built Wed, 14 Nov 2012 14:26:46 -0700) X-SA-Exim-Scanned: Yes (on in02.mta.xmission.com) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 685 Lines: 22 Christian Kujau writes: > On Sun, 8 Sep 2013 at 23:42, Eric W. Biederman wrote: >> The check with hidepid is can you ptrace the process. I expect there >> is something with those sgid processes that keeps you from ptracing >> them. > > Indeed, I cannot strace the process. But still, I wonder if this is > intended behaviour. Well it is acting as desgined so I assume it is intended. Beyond that shrug. Eric -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/